NO.PZ2018062003000066
问题如下：
Being a monopoly in the market, Googge,Inc. recently carrys out its market study and finds that the price elasticity of demand is 1.8. If the marginal cost is $30 and the average cost is $50, its price is most likely to be:
选项：
A. $30.
B. $50.
C. $68.
解释：
C is correct
When MR = MC, the firm can achieve maximized profits. Because MR =P(1-1/|E|) we can draw the equation:
$30 = P[1 – (1/1.8)] = P × 0.444
P = $68
考题：利润最大化
解析：本题直接考察利润最大化，
直接套用公式，MR =P(1-1/|E|)，代入数据得：
$30 = P[1 – (1/1.8)] = P × 0.444，反解得到P
P = $68
根据视频的Government regulation , AVerage cost pricing, 应该选B. 这就矛盾了。我在BC两项中混淆，举棋不定。谢谢老师。